package cn.codeim;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;

import java.nio.charset.StandardCharsets;
import java.util.logging.Logger;

public class TimeClientHandler extends ChannelHandlerAdapter {
    private static final Logger logger = Logger.getLogger(TimeClientHandler.class.getName());
    private int count = 0;
    private byte[] req;

    public TimeClientHandler() {
        //System.lineSeparator()是换行符，使用这个可以屏蔽windows和Linux的区别
        req = ("QUERY TIME ORDER" + System.lineSeparator()).getBytes();
    }


    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        ByteBuf message = null;
        for (int i = 0; i < 100; i++) {
            message = Unpooled.buffer(req.length);
            message.writeBytes(req);
            ctx.writeAndFlush(message);
        }
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        byte[] bytes = new byte[buf.readableBytes()];
        buf.readBytes(bytes);
        String s = new String(bytes, StandardCharsets.UTF_8);
        System.out.println("Now is : " + s+System.lineSeparator());
        System.out.println("this count is : " + ++count);
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        //释放资源
        logger.warning("Unexpected exception from downstream : " + cause.getMessage());
        ctx.close();
    }
}
